Math Problem Statement

Usia Maryam 2x Usia Ismail. Sedangkan usta yusuf 10 tahun, lebih muda dari Usia Maryam. Jika ratar usla ketiganya sama dengan usia yusuf. Maka perbandingan Usia Maryam, Ismail dan Yusuf adalah

Solution

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Math Problem Analysis

Mathematical Concepts

Algebra
Ratio and Proportion
Averages

Formulas

Maryam's age = 2 × Ismail's age (M = 2I)
Yusuf's age = Maryam's age - 10 (Y = M - 10)
Average age formula: (M + I + Y) / 3 = Y

Theorems

Properties of averages
Solving linear equations

Suitable Grade Level

Grades 7-9